// Sphericubic.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "Sphericubic.h"

#include "Application.h"
using namespace Sphericubic;

#include "../DIWrapper/InputManager.h"
using namespace Input;

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;								// current instance
TCHAR szTitle[MAX_LOADSTRING];					// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];			// the main window class name

Application g_App;

// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
HWND				InitInstance(HINSTANCE, int);
BOOL CALLBACK		MonitorEnumProc(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);

 	// TODO: Place code here.
	HACCEL hAccelTable;

	// Initialize global strings
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_SPHERICUBIC, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	g_App.m_oVideoInfo.m_uWidth = 320;
	g_App.m_oVideoInfo.m_uHeight = 240;
	g_App.m_oVideoInfo.m_bFullscreen = false;

	// Perform application initialization:
	g_App.m_hWnd = InitInstance ( hInstance, nCmdShow );
	if ( NULL == g_App.m_hWnd )
	{
		return FALSE;
	}

	if ( false == g_App.OpenVideo() )
	{
		g_App.CloseVideo();
		return FALSE;
	}

	if ( false != g_App.LoadCelestialData( "Data/CelestialSystems/Test.cs" ) )
	{
		g_App.JumpToCelestialObject( "earth" );
	}
	else
	{
		g_App.UnloadCelestialData();
		g_App.CloseVideo();
		return FALSE;
	}

	InputManager::GetInstance().Create( hInstance, g_App.m_hWnd, DISCL_BACKGROUND | DISCL_NONEXCLUSIVE );

	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_SPHERICUBIC));

	// Main message loop:
	// From the DirectX documentation
	// The problem with GetMessage() is that if there is no message in the queue for the application window, GetMessage() blocks and does not return until a message is available.
	// Thus, instead of doing something like rendering, our application is waiting within GetMessage() when the message queue is empty.
	// We can solve this problem by using PeekMessage() instead of GetMessage().
	// PeekMessage() can retrieve a message like GetMessage() does, but when there is no message waiting, PeekMessage() returns immediately instead of blocking.
	// We can then take this time to do some rendering.
	MSG msg = {0};
	while ( WM_QUIT != msg.message )
	{
		if( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) )
		{
			if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
			{
				TranslateMessage(&msg);
				DispatchMessage(&msg);
			}
		}
		else
		{
			g_App.Update();
		}
	}

	g_App.UnloadCelestialData();
	InputManager::GetInstance().Release();
	g_App.CloseVideo();

	return (int) msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage are only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_SPHERICUBIC));
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= MAKEINTRESOURCE(IDC_SPHERICUBIC);
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassEx(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
HWND InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   WINDOWINFO oDesktopWI;
   
   GetWindowInfo( GetDesktopWindow(), &oDesktopWI );

   RECT oClientRect = {
	   0, //CW_USEDEFAULT,
	   0, //0,
	   g_App.m_oVideoInfo.m_uWidth,
	   g_App.m_oVideoInfo.m_uHeight
   };

   // Resizes window so that client size has the specified video width/height.
   AdjustWindowRect( &oClientRect, WS_OVERLAPPEDWINDOW, TRUE );
   // Set window positions in the middle of the first monitor.
   EnumDisplayMonitors( NULL, NULL, MonitorEnumProc, LPARAM(&oClientRect) );

   hWnd = CreateWindow(
	  szWindowClass,
	  szTitle,
	  WS_OVERLAPPEDWINDOW,
      oClientRect.left,
	  oClientRect.top,
	  oClientRect.right,
	  oClientRect.bottom,
	  NULL,
	  NULL,
	  hInstance,
	  NULL);

   if (!hWnd)
   {
      return NULL;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return hWnd;
}

BOOL CALLBACK MonitorEnumProc(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData)
{
	// search for the first monitor
	if ( ( 0 == lprcMonitor->left ) && ( 0 == lprcMonitor->top ) )
	{
		LPRECT pRect = LPRECT(dwData);

		pRect->left = ( lprcMonitor->right - pRect->right ) / 2;
		pRect->top = ( lprcMonitor->bottom - pRect->bottom ) / 2;

		return FALSE;
	}

	return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message)
	{
	case WM_COMMAND:
		wmId    = LOWORD(wParam);
		wmEvent = HIWORD(wParam);
		// Parse the menu selections:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code here...
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}
